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3 years ago

In a wave, what is the distance from crest to crest or from trough to trough

Physics

2 answers:

statuscvo [17]3 years ago

5 0

The answer is Wavelength

zhuklara [117]3 years ago

4 0

<h2>Answer:</h2>

<u>The distance is known as</u><u> wavelength</u>

<h2>Explanation:</h2>

Wavelength is the distance between two successive crests or troughs of a wave, especially points in a sound wave or electromagnetic wave. Light is measured by its wavelength (in nanometers) or frequency (in Hertz). They can also be as long as centimeters or meters, like in radio waves. It is denoted by λ and it is inversely proportional to frequency of a wave.

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What is the frequency of a wave that has a speed of 5 m/s and a wavelength of 0.5meter?

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Explanation:

frequency =speed/wavelength

=5/0.5=10Hz

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3 years ago

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3 years ago

How much kinetic energy does a 6kg cart have when moving at 4 m/s?

Arturiano [62]

Given:

mass = 6 kg

velocity = 4 m/s

To find:

Kinetic energy of the cart = ?

Formula used:

Kinetic energy = $\frac{1}{2} m v^{2}$

Where m = mass of the cart

v = velocity with which the cart is moving

Solution:

Kinetic energy of the moving cart is given by,

Kinetic energy = $\frac{1}{2} m v^{2}$

Where m = mass of the cart

v = velocity with which the cart is moving

Kinetic energy = $\frac{1}{2} \times 6 \times \ 4 \times 4$

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4 years ago

The outside diameter of the playing area of an optical Blu-ray disc is 11.75 cm, and the inside diameter is 4.50 cm. When viewin

erica [24]

Answer:

The minimum angular speed 57.0 rad/s

Explanation:

In this exercise we must use the relationships between the angular and linear magnitudes, for the speeds we have

v = w r

As they give us that linear velocity is constant, we will calculate the angular velocity for the two radii, external and internal

r1 = 11.75 cm (1 m / 100cm) = 0.1175 m

w1 = v / r1

w1 = 6.70 / 0.1175

w1 = 57.0 rd / s

R2 = 4.50 cm = 0.0450 m

w2 = 6.70 / 0.0450

w2 = 148 rad / s

The minimum angular speed 57.0 rad / s

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3 years ago

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3 years ago